Results 11 to 20 of about 1,309,000 (350)

An explanatory model for food-web structure and evolution [PDF]

open access: yes, 2005
Food webs are networks describing who is eating whom in an ecological community. By now it is clear that many aspects of food-web structure are reproducible across diverse habitats, yet little is known about the driving force behind this structure ...
A.G. Rossberg   +36 more
core   +4 more sources

Identification of aquatic consumer trophic pathways in four volcanic tropical lakes using fatty acid biomarkers

open access: yesJournal of Limnology, 2022
Food web studies rely heavily on the use of traditional gut content analysis or the fairly popular stable isotope analysis rather than fatty acid analysis (FAA) despite its straightforward process, and ability to identify and characterize more diverse ...
Justine R. de Leon   +6 more
doaj   +1 more source

Reduced tillage, but not organic matter input, increased nematode diversity and food web stability in European long‐term field experiments [PDF]

open access: yes, 2019
Soil nematode communities and food web indices can inform about the complexity, nutrient flows and decomposition pathways of soil food webs, reflecting soil quality.
De Caceres M.   +22 more
core   +1 more source

FOOD WEB COHESION

open access: yesEcology, 2004
Both dynamic and topologic approaches in food webs have shown how structure alters conditions for stability. However, while most studies concerning the structure of food webs have shown a nonrandom pattern, it still remains unclear how this structure is related to compartmentalization and to responses to perturbations. Here we build a bridge
Melián, Carlos J., Bascompte, Jordi
openaire   +2 more sources

Bioaccumulation modelling and sensitivity analysis for discovering key players in contaminated food webs: the case study of PCBs in the Adriatic Sea [PDF]

open access: yes, 2015
Modelling bioaccumulation processes at the food web level is the main step to analyse the effects of pollutants at the global ecosystem level. A crucial question is understanding which species play a key role in the trophic transfer of contaminants to ...
Marianna Taffi a, D   +3 more
core   +1 more source

Intraspecific Behavioral Variation Mediates Insect Prey Survival via Direct and Indirect Effects

open access: yesDiversity, 2020
Conspecific individuals often exhibit behavioral differences that influence susceptibility to predation. Yet, how such trait differences scale to affect prey population regulation and community structure remains unclear.
Benjamin J. Toscano   +2 more
doaj   +1 more source

Distribution and drift dispersal dynamics of a caddisfly grazer in response to resource abundance and its ontogeny [PDF]

open access: yesRoyal Society Open Science, 2017
Stream grazers have a major impact on food web structure and the productivity of stream ecosystems; however, studies on the longitudinal (upstream versus downstream) and temporal changes in their drift dynamics and resulting distributions remain limited.
Izumi Katano   +4 more
doaj   +1 more source

Deleting species from model food webs [PDF]

open access: yes, 2004
We use food webs generated by a model to investigate the effects of deleting species on other species in the web and on the web as a whole. The model incorporates a realistic population dynamics, adaptive foragers and other features which allow for the ...
Abrams   +43 more
core   +3 more sources

Using food-web theory to conserve ecosystems [PDF]

open access: yes, 2015
© 2016, Nature Publishing Group. All rights reserved.Food-web theory can be a powerful guide to the management of complex ecosystems. However, we show that indices of species importance common in food-web and network theory can be a poor guide to ...
McDonald-Madden, E, Possingham, HP
core   +1 more source

Caught in the food web: complexity made simple?

open access: yesScientia Marina, 2001
Several historically separate lines of food-web research are merging into a unified approach. Connections between microbial and metazoan food webs are significant.
Lawrence R. Pomeroy
doaj   +1 more source

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